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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_VR_RENDERERS_TEXTURED_QUAD_RENDERER_H_
#define CHROME_BROWSER_VR_RENDERERS_TEXTURED_QUAD_RENDERER_H_
#include "base/containers/queue.h"
#include "chrome/browser/vr/renderers/base_renderer.h"
#include "ui/gfx/geometry/rect_f.h"
#include "ui/gfx/geometry/size_f.h"
#include "ui/gfx/geometry/transform.h"
namespace vr {
class TexturedQuadRenderer : public BaseRenderer {
public:
TexturedQuadRenderer(const char* vertex_src, const char* fragment_src);
TexturedQuadRenderer();
TexturedQuadRenderer(const TexturedQuadRenderer&) = delete;
TexturedQuadRenderer& operator=(const TexturedQuadRenderer&) = delete;
~TexturedQuadRenderer() override;
// Enqueues a textured quad for rendering. The GL will ultimately be issued
// in |Flush|.
void AddQuad(int texture_data_handle,
int overlay_texture_data_handle,
const gfx::Transform& model_view_proj_matrix,
const gfx::RectF& clip_rect,
float opacity,
const gfx::SizeF& element_size,
float corner_radius,
bool blend);
void Flush() override;
static void CreateBuffers();
static GLuint VertexBuffer();
static GLuint IndexBuffer();
static int NumQuadIndices();
protected:
virtual GLenum TextureType() const;
static const char* VertexShader();
private:
struct QuadData {
int texture_data_handle;
int overlay_texture_data_handle;
gfx::Transform model_view_proj_matrix;
gfx::RectF clip_rect;
float opacity;
gfx::SizeF element_size;
float corner_radius;
bool blend;
};
static GLuint vertex_buffer_;
static GLuint index_buffer_;
// Uniforms
GLuint model_view_proj_matrix_handle_;
GLuint corner_offset_handle_;
GLuint opacity_handle_;
GLuint overlay_opacity_handle_;
GLuint texture_handle_;
GLuint overlay_texture_handle_;
// Attributes
GLuint corner_position_handle_;
GLuint offset_scale_handle_;
GLuint uses_overlay_handle_;
base::queue<QuadData> quad_queue_;
};
} // namespace vr
#endif // CHROME_BROWSER_VR_RENDERERS_TEXTURED_QUAD_RENDERER_H_
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